We've started having issues where users randomly lose edir rights to
folders they have had rights to for years, such as their user folder,
which we map to their H drive. Re-adding the rights works fine, but
this should not need to be done.

My file servers are OES2sp3 running on SLES10sp4 (64bit), edir 8.8 sp6.
Time is in sync, etc.

Suggestions, ideas as to what could be causing this?